Plasma leptin, plasma zinc, and plasma copper are associated in elite female and male judo athletes.
The purpose of this study was to compare plasma leptin, plasma zinc, and plasma copper levels and their relationship in trained female and male judo athletes (n = 10 women; n = 8 men). Blood samples were obtained 24 h after training to measure plasma zinc, copper, and leptin levels. Subjects presented similar values to age (22 +/- 2 years old), body mass index (24 +/- 1 kg/m(2)), plasma zinc (17.2 +/- 2 micromol/L), copper (12.5 +/- 2 micromol/L), and leptin (5.6 +/- 1.3 microg/L). However, height, total body mass, lean mass, fat mass, and sum of ten-skinfold thickness were higher in male than female. Plasma leptin was associated with sum of ten skinfolds in male (r = 0.91; p < 0.001) and female athletes (r = 0.84; p < 0.003). Plasma zinc was associated with leptin in males (r = 0.82; p < 0.05) while copper was associated with plasma leptin in females (r = 0.66; p < 0.05). Our results suggest that young judo athletes lost sex-related differences in leptin levels. Plasma zinc, plasma copper, and energy homeostasis may be involved in regulation of plasma leptin.
Casimiro-Lopes
Gustavo
G
Laboratório de Fisiologia Endócrina, Departamento de Ciências Fisiológicas, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
de Oliveira-Junior
Astrogildo Vianna
AV
Portella
Emilson Souza
ES
Lisboa
Patrícia Cristina
PC
Donangelo
Carmen Marino
CM
de Moura
Egberto Gaspar
EG
Koury
Josely Correa
JC
D000273:Adipose Tissue; D054874:Athletic Performance; D001827:Body Height; D015992:Body Mass Index; D003300:Copper / Q000097:blood*; D015444:Exercise / Q000502:physiology; D005260:Female; D006801:Humans; D020738:Leptin / Q000097:blood*; D008297:Male; D016139:Martial Arts; D012727:Sex Characteristics; D055815:Young Adult; D015032:Zinc / Q000097:blood*
D020738:Leptin; D003300:Copper; D015032:Zinc